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Isolation auxiliary device for high-voltage cable withstand voltage test

A technology of withstand voltage test and auxiliary equipment, which is applied in the field of high voltage cable withstand voltage, and can solve problems such as insufficient insulation distance

Inactive Publication Date: 2021-09-24
MAINTENANCE BRANCH OF STATE GRID HEBEI ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide an isolation auxiliary device for high-voltage cable withstand voltage test, which can effectively solve the problem of insufficient insulation distance in the process of cable withstand voltage

Method used

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  • Isolation auxiliary device for high-voltage cable withstand voltage test

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 as shown,

[0044] An isolation auxiliary device for high-voltage cable withstand voltage test, including a fixing component for connecting the voltage-resistant cable 2 and the connecting cable 1, a shielding isolation component wrapped outside the fixing component, and a grounding wire 14 connected to the shielding isolation component .

[0045] Specifically in this embodiment,

[0046] The fixing assembly includes two opposite fixing plates 9, the cable pressing plates 11 that are fixedly connected to the opposite faces of the two fixing plates 9 by supporting and fixing springs 12 respectively, and the fixing plates 9 are used to press the cable pressing plates 11 compression bolts 10;

[0047] The end of the voltage-resistant cable 2 is stripped of the outer insulation layer to expose the second cable terminal board 8, and the end of the connecting cable 1 is stripped of the external insulation layer to expose the first cable terminal board 7; ...

Embodiment 2

[0058] Such as figure 1 as shown,

[0059] An isolation auxiliary device for high-voltage cable withstand voltage test, including a fixing component for connecting the voltage-resistant cable 2 and the connecting cable 1, a shielding isolation component wrapped outside the fixing component, and a grounding wire 14 connected to the shielding isolation component .

[0060] Specifically in this embodiment,

[0061] The fixing assembly includes two opposite fixing plates 9, the cable pressing plates 11 that are fixedly connected to the opposite faces of the two fixing plates 9 by supporting and fixing springs 12 respectively, and the fixing plates 9 are used to press the cable pressing plates 11 compression bolts 10;

[0062] The end of the voltage-resistant cable 2 is stripped of the outer insulation layer to expose the second cable terminal board 8, and the end of the connecting cable 1 is stripped of the external insulation layer to expose the first cable terminal board 7; ...

Embodiment 3

[0079] Such as figure 1 as shown,

[0080] An isolation auxiliary device for high-voltage cable withstand voltage test, including a fixing component for connecting the voltage-resistant cable 2 and the connecting cable 1, a shielding isolation component wrapped outside the fixing component, and a grounding wire 14 connected to the shielding isolation component .

[0081] Specifically in this embodiment,

[0082] The fixing assembly includes two opposite fixing plates 9, the cable pressing plates 11 that are fixedly connected to the opposite faces of the two fixing plates 9 by supporting and fixing springs 12 respectively, and the fixing plates 9 are used to press the cable pressing plates 11 compression bolts 10;

[0083] The end of the voltage-resistant cable 2 is stripped of the outer insulation layer to expose the second cable terminal board 8, and the end of the connecting cable 1 is stripped of the external insulation layer to expose the first cable terminal board 7; ...

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PUM

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Abstract

The invention discloses an isolation auxiliary device for a high-voltage cable withstand voltage test, and the device is characterized in that when a cable is subjected to a withstand voltage test, a boosting device is connected with the cable through the isolation auxiliary device through the cable; the device comprises a fixing assembly used for connecting a voltage-withstanding cable and a connecting cable, a shielding isolation assembly wrapping the fixing assembly, and a grounding wire connected to the shielding isolation assembly. The device comprises the capsule filled with SF6 gas, so that the insulating strength is enhanced; the device comprises a grounded shielding layer, an electromagnetic field generated by high voltage is shielded in the shielding layer, meanwhile, if a cable head in the shielding layer discharges, leaked current flows into a ground screen along the shielding layer, equipment outside the shielding layer cannot be damaged, and the safety protection effect is achieved.

Description

technical field [0001] The invention relates to an isolation auxiliary device for a high-voltage cable withstand voltage test, and belongs to the technical field of high-voltage cable withstand voltage. Background technique [0002] Power cables are cables used to transmit and distribute electric energy. They are often used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. [0003] By category, it generally includes oil-impregnated paper insulated power cables, plastic insulated power cables, and rubber insulated power cables. [0004] During the storage, transportation, laying and operation of the cables, they may be damaged by external forces, especially the directly buried cables that have been in operation, which are vulnerable to damage during the ground construction of other projects. Sudden high voltage intrusion or long-term overloa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01R1/18
CPCG01R31/1272G01R1/18
Inventor 赵冀宁刘晓飞付炜平李建鹏冯鹏森胡伟涛隋月艺侯建辉杨世博白剑忠尹子会郝自为轩莹莹
Owner MAINTENANCE BRANCH OF STATE GRID HEBEI ELECTRIC POWER